Description

Company Overview:

Integral Technology Services is a rapidly expanding organization situated in Medellín, Colombia. We pride ourselves on possessing one of the most influential networks within software development and IT services for the entertainment, financial, and logistics sectors. Our corporate projections offer a multitude of opportunities for professionals to elevate their careers and experience substantial growth.

Joining our team means engaging with expansive engineering teams across Latin America, Philippines and the United States, contributing to cutting-edge developments in multiple industries.

Position Title: FullStack Developer

Category: Software Development.

Seniority: Senior

Location: LATAM

What you will be doing:

We’re seeking a senior-level Fullstack Engineer with a strong preference for F# expertise to join our dynamic team. This role is pivotal in developing and enhancing scalable, reliable logistics applications, encompassing both sophisticated backend services and modern frontend interfaces.

You will be instrumental in driving new architectural patterns and standards, focusing on clean design, operational excellence, and a reliability-first approach. The position involves hands-on development using F# for backend systems and proficiency in React for frontend development. A key aspect of this role includes contributing to the development of automated quality assurance (AQA) tests using the Playwright framework.

You will collaborate closely with cross-functional teams, participate in on-call rotations for production systems, and contribute to a culture that values continuous improvement and thoughtful problem-solving. While F# is preferred, candidates with a solid C#/.NET functional programming foundation and a demonstrated willingness to learn F# will be considered.

Key Responsibilities

- Develop and maintain robust backend services utilizing F#, adhering to best practices for scalable and reliable cloud-hosted applications on AWS.

- Use AI tools to improve your development quality and manual processes.

- Implement and enhance modern frontend features using React, incorporating

Server-Side Rendering (SSR) practices.

- Design and implement solutions leveraging event-driven architectures and event streaming concepts, with familiarity in systems like Kafka being advantageous.





- Write comprehensive unit and integration tests for both frontend and backend code to ensure application quality and stability.

- Contribute to the development and maintenance of applications using relational databases, including PostgreSQL and SQL Server, with a strong understanding of SQL, indexing, and debugging.

- Participate actively in the on-call rotation for production systems, focusing on triaging and resolving incidents to minimize downtime.

- Drive the adoption of observability practices, including structured logging and the creation of runbooks, to enhance system operability and maintainability.

- Develop and execute automated tests using the Playwright framework for API testing, contributing to the overall quality assurance process.

- Collaborate with cross-functional teams to define and implement architectural patterns, ensuring applications are designed for operability, scalability, and maintainability.

- Contribute to the continuous improvement of the application portfolio, focusing on enhancing user experience and managing technical debt.

Required Skills & Experience

- Proficiency in F# for backend development; C# with a strong functional programming foundation and a demonstrated willingness to learn F# will also be considered.

- Mid-level proficiency in frontend development with React, TypeScript, and

CSS.

- Experience with Server-Side Rendering (SSR) practices, such as htmx or similar technologies.

- Practical understanding of event-driven systems and distributed system concepts, including idempotency and eventual consistency.

- Experience developing cloud-hosted applications on AWS, Azure, or GCP.

- Comfortable working with relational databases, including SQL, indexing, and debugging.

- Experience writing unit and integration tests for both frontend and backend code.

- Familiarity with CI/CD practices and maintaining a strong working knowledge of the tech stack.





- Experience with observability practices, including structured logging and runbooks.

- Experience with AI tools like Claude, copilot or similar, to improve the coding process and the quality of this.

Nice to Have Skills

- Familiarity with containerization technologies such as Docker and orchestration tools like Kubernetes.

- Experience with event streaming platforms, specifically Apache Kafka.

- Proficiency in developing automated API tests using the Playwright framework.

- Experience with specific AWS services including S3, SQS, SNS, and Lambda.

- Knowledge of infrastructure as code tools, such as Terraform.

- Familiarity with GitHub Actions for CI/CD pipelines.

- Experience with both PostgreSQL and SQL Server relational database engines.

- Exposure to F# front-end DSLs for server-side rendering (SSR).

Soft Skills

- Clear and concise communication, essential for translating complex technical details to cross-functional teams and for articulating design choices through documentation and reviews.

- A strong sense of ownership and a proactive, detail-oriented approach to problem-solving, driving continuous improvement in application development and operational excellence.

- Adaptability and comfort working within distributed teams and fast-paced environments, embracing a culture that encourages experimentation and learning from failures.

- Empathetic collaboration, valuing team growth and constructive feedback to foster a supportive and innovative development environment.

- A mindset that encourages challenging existing patterns and proposing innovative solutions, aligning with Lean Tech's culture of continuous advancement.

Why you will love GTS:

- Join a powerful tech workforce and help us change the world through technology

- Professional development opportunities with international customers

- Collaborative work environment

- Career path and mentorship programs that will lead to new levels.

Join GTS and contribute to shaping the data landscape within a dynamic and growing organization. Your skills will be honed, and your contributions will play a vital role in our continued success. GTS is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.

📌 Senior FullStack Developer (Colombia)
🏢 Lean Solutions Group
📍 Colombia